From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbguseast3.qq.com (smtpbguseast3.qq.com [54.243.244.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2D5553F44EC for ; Tue, 4 Aug 2026 07:08:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.243.244.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785827323; cv=none; b=P7VpsBRw5frv3Gm+j2f8vjF5TkDpSGDMQTVMkcde7SjcVsazSMT70/YJawxjsdjwTsYXD84V25gaNlyEzLDtFrthTr9qPZrjTIbsg3FH1tHPh4txwnfwogmUKbrtaacyWL6tAWCZuA0HNTEaMioaPwN3sUwBcFCTi/7N26QdFtU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785827323; c=relaxed/simple; bh=Do2vEEbKffBKIoRwA8XTtrCuUyMId8s9a5j5NUcntlY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=Mq3HI4nPms9nrlKyj/85dhJpID5nNSzWhMpziNtctMI8gxZYhWOon1vwZDGiVlNzXRCkyJNEbPH88LlXPC8Yyv+8LHxZ0rMIdTY3543i4nuqKERb54HcIFSxLgq9Iu6GDJZIu9beSbNgpACQ8BlC5lU+oZiWsiMi8vuM1OD30RA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=airkyi.com; spf=pass smtp.mailfrom=airkyi.com; dkim=pass (1024-bit key) header.d=airkyi.com header.i=@airkyi.com header.b=gGBFqoBr; arc=none smtp.client-ip=54.243.244.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=airkyi.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=airkyi.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=airkyi.com header.i=@airkyi.com header.b="gGBFqoBr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1785827304; bh=hfSDcA/VFf5O36XZ1jIbDeiIvlPOe5N0iYnQa5D5SVg=; h=From:To:Subject:Date:Message-Id; b=gGBFqoBrLYjgIoQf93SB0LsFUNWmWzBa0WAeEL/CHcGgcyXOOUJJdKp6h2PjRTt7U TnNS74zYEUuYk7g+Qv4ewQwYmq60MX6DWWPFz7/6CcN5V0LEZwk85grZkMx60sbYj4 kU1WD4obc4kW82hHefJGXY3+julCFOm2ql+LOYq0= X-QQ-mid: esmtpsz19t1785827303t5bf198e5 X-QQ-Originating-IP: lvl2+FbaNh+rQwA9UiH/mIq1IbGfwWu7ceGOLF34ChE= Received: from DESKTOP-8BT1A2O.localdomain ( [61.154.14.86]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 04 Aug 2026 15:08:17 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 9591211564925430359 From: Chaoyi Chen To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Andy Yan , Vinod Koul , Chaoyi Chen , Sebastian Reichel , Nicolas Frattaroli , Heikki Krogerus Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-phy@lists.infradead.org Subject: [PATCH v6 6/7] drm/rockchip: cdn-dp: Support handle lane info without extcon Date: Tue, 4 Aug 2026 15:07:29 +0800 Message-Id: <20260804070730.68-7-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260804070730.68-1-kernel@airkyi.com> References: <20260804070730.68-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:airkyi.com:qybglogicsvrgz:qybglogicsvrgz6b-0 X-QQ-XMAILINFO: OQhZ3T0tjf0a53H4cXaW5XVJtNDmdpZ5dRqf2kxYUcUjyyAKHgocUyjO DCksxAqaUs0wV6TiJXCYCm/pNU3RnN+l+PVrzwcs/fgsBA4M6208kw6iEamx6x1w32OLtk+ g/mFzWGppVipjjqoXv4cU8D9F285B/GWRxCu9bKmo/p+kbzB588bIgedNwYQOKb7RsY5LzF xKKkWzQ8vecdWRJx4Mxjpw7S2ETiSm3zS/nPAOPyImGDpkZvMSHaufYroYDMPqv2mUJUUq9 ZvpPh5y+sMxAGNAyw1jSAdfRW576fW7RzDE2LKgaRj9KXbCTXiGtReFtEey6kbRqOg2AQ7e oq1QcznUrq9vWmXk8ONSOMgCIoICcfezbslnNKru6iIle9CaieEB7iplrQVBKxrtGAESRNK crLHWtOpweGqWNDsUo2M07Xg6L1Pm+f2ywMaF3K/dMM3gvUXDfQgSzMq9R84MMzSDSpuAtK Yomi2TwWiWSHJ6buC07tws105/NkskXdlf2aaX3TV3iRSZxZwVxoWnZZMwYwdyMiLWQ/Ea8 t6qnbj/0ZQrlmC0/xnfIXnzGWxo6sjEvZJjjPp54RD647liG4tcKVeWr8vhYHyFUe5XAh9F KZVZmZ6KGPbUry6est3NTYdhgXLR00UsXzspQ2rAsp54RPYXkZLPZBHKhBiAvr1KkyJZglC t3Pzvo5jBCeDa7iNLyklWkzYhMtqmKdwAW/21dUm29Qpv1fKqjPV7WT4BNYDcQhOS7hf9DZ n4OYZWGP/UDLfTzM74hfLyzC/5MR0vvTVV77CxcaGCZym+kkRGdWm28W8XxLGQs026D/ngs qlz8UV2ZPafvPauYgh2csgQI4glPUL/kxO6BwZmB00A0DZddW1objjw7y0K9PD/xFQM+s8n HtoB3jn+C/gqO3VQqG3tkASwbjTsGNYD01/1Jl9Ji1spUjKU/WPD1fO/8Aw7HUdXR/JI1M/ i2y+H2hZCArDx8DSeEjaUtPAifVkyEkZl9V5dnDtrGd6DlyvxFDEWmWVFXp+tI3j/k7cD/d 16a3rr6Q== X-QQ-XMRINFO: MSVp+SPm3vtSI1QTLgDHQqIV1w2oNKDqfg== X-QQ-RECHKSPAM: 0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Chaoyi Chen This patch add support for get PHY lane info without help of extcon. There is no extcon needed if the Type-C controller is present. In this case, the lane info can be get from PHY instead of extcon. The extcon device should still be supported if Type-C controller is not present. Signed-off-by: Chaoyi Chen Reviewed-by: Heiko Stuebner --- (no changes since v1) --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index 190cce9530c8..74e1f5422a6e 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -157,6 +157,9 @@ static int cdn_dp_get_port_lanes(struct cdn_dp_port *port) int dptx; u8 lanes; + if (!edev) + return phy_get_bus_width(port->phy); + dptx = extcon_get_state(edev, EXTCON_DISP_DP); if (dptx > 0) { extcon_get_property(edev, EXTCON_DISP_DP, @@ -220,7 +223,7 @@ static bool cdn_dp_check_sink_connection(struct cdn_dp_device *dp) * some docks need more time to power up. */ while (time_before(jiffies, timeout)) { - if (!extcon_get_state(port->extcon, EXTCON_DISP_DP)) + if (port->extcon && !extcon_get_state(port->extcon, EXTCON_DISP_DP)) return false; if (!cdn_dp_get_sink_count(dp, &sink_count)) @@ -386,11 +389,14 @@ static int cdn_dp_enable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) goto err_power_on; } - ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, - EXTCON_PROP_USB_TYPEC_POLARITY, &property); - if (ret) { - DRM_DEV_ERROR(dp->dev, "get property failed\n"); - goto err_power_on; + property.intval = 0; + if (port->extcon) { + ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, + EXTCON_PROP_USB_TYPEC_POLARITY, &property); + if (ret) { + DRM_DEV_ERROR(dp->dev, "get property failed\n"); + goto err_power_on; + } } port->lanes = cdn_dp_get_port_lanes(port); @@ -1027,6 +1033,9 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data) for (i = 0; i < dp->ports; i++) { port = dp->port[i]; + if (!port->extcon) + continue; + port->event_nb.notifier_call = cdn_dp_pd_event; ret = devm_extcon_register_notifier(dp->dev, port->extcon, EXTCON_DISP_DP, @@ -1119,14 +1128,14 @@ static int cdn_dp_probe(struct platform_device *pdev) PTR_ERR(phy) == -EPROBE_DEFER) return -EPROBE_DEFER; - if (IS_ERR(extcon) || IS_ERR(phy)) + if (IS_ERR(phy) || PTR_ERR(extcon) != -ENODEV) continue; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; - port->extcon = extcon; + port->extcon = IS_ERR(extcon) ? NULL : extcon; port->phy = phy; port->dp = dp; port->id = i; -- 2.53.0